Description

Give your flowering plants the finishing boost they need with OG, a high-performance bloom hardener designed to increase flower density, improve flower structure and support maximum yield. Trusted by professional growers, OG helps plants produce heavier, more aromatic flowers while maintaining strong, healthy growth during the late flowering phase.

Read the full product overview here...

OG is a powerful bloom-stage additive formulated to enhance flower firmness, improve essential oil production and increase final harvest weight. Its optimised blend of potassium, phosphorus and natural plant stimulants encourages plants to pack on weight and density during the crucial ripening stage.

Compatible with soil, coco and hydroponic systems, OG is ideal for growers aiming for bigger, more robust flowers and superior overall crop quality. Use alongside your regular nutrient program for optimal results.

Key Features & Benefits

  • Increases Flower Density: Encourages firmer, more compact flowers for a visually impressive and higher-yielding harvest.
  • Supports Maximum Yields: Enhances flower mass and weight during the final flowering stage.
  • Improves Flower Quality: Supports aroma and flavour development.
  • Optimised Nutrient Formula: Provides key minerals and natural stimulants to support late-stage flowering.
  • Easy-to-Use Additive: Simply add to your nutrient feed with no complex mixing required.
  • PGR-Free: Contains no synthetic growth regulators, ensuring natural, clean flower development.
  • Versatile Compatibility: Suitable for soil, coco coir and hydroponic systems.

How to Use

  • Shake well before use.
  • Mix 1 to 3 ml per litre of water depending on plant size and stage.
  • Apply during the final 2 to 3 weeks of flowering to harden flowers and maximise weight.
  • Always use in combination with your base nutrient feed and adjust pH after mixing.

Frequently Asked Questions (FAQ)

When should I start using OG?
Begin during the final 2 to 3 weeks of flowering to enhance flower density, structure and weight.

Can OG be used in all grow mediums?
Yes, it works effectively in soil, coco coir and hydroponic systems.

Is OG a complete nutrient?
No, OG is a bloom hardener additive designed to complement your existing nutrient program.

Will it work with hard water?
Yes, the formula is compatible with both soft and hard water conditions.

Is OG PGR-free?
Yes, it contains no synthetic plant growth regulators, making it safe for plants and the environment.

During late flowering, plants need additional support to fully mature flowers, increase density and maximise flower weight. OG provides the essential minerals and natural stimulants that help harden flowers, boost essential oil production and improve final yield quality. Incorporating OG into your nutrient regimen ensures stronger, more aromatic flowers and a visually impressive, high-quality harvest.

Explore the range

See all Additives & Boosters (153)

Not sure which one is right for your setup? Message us on WhatsApp or call 0121 553 7872.

Delivery, returns and FAQs

Will my order arrive in plain packaging?

Yes. Every order is sent in plain, unbranded packaging as standard.

How quickly will my order arrive?

Order standard size items by 12pm on a working day and choose Next working day at checkout, and your order will be with you the next working day. Standard delivery takes 2 to 3 working days.

Bulky items such as grow tents, large fans and 50L bags of soil go by courier in 2 to 3 working days, or on a pallet for very heavy orders. Next day is not available for these, and if your basket includes a bulky item the whole order travels with it.

UK delivery is free on orders of £94.99 or more, except for bulky items. See our delivery page for full prices.

Can I collect from the shop?

Yes. Choose Click & Collect at checkout and pick up for free from our shop at Unit 2 Black Lake, West Bromwich, B70 0PJ. Orders are usually ready within 1 hour.

Can I return an item?

You have 14 days from receiving your order to tell us you want to cancel, then a further 14 days to send it back. Items need to be unopened and in a resaleable condition.

If you change your mind, the return postage is paid by you. If something arrives faulty or damaged, send us photos within 48 hours and we will cover the cost of putting it right. Full details are in our refund policy.

Do you price match?

Yes. If you find the OG Rapid Flower & Hardener cheaper at another UK retailer, use the Price Match button on this page. We usually reply within one business day.

Need help choosing?

Speak to our team. Call us on 0121 553 7872, message us on WhatsApp, or visit the shop in West Bromwich.

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